.tab{
    width: 100%;
    height: 48px;
    display: flex;
    justify-content: center;
}
.tab > .tab-context{
    width: 80%;
    height: 48px;
    background-color: #fbfbfb;
    display: flex;
    justify-content: space-around;
}
.tab-context > a{
    height: 48px;
    line-height: 48px;
    text-decoration: none;
    color: #595959;
}

.tab-context > a:hover{
    color: #1890ff;
    font-weight: bold;
}